Cold spray is one of the most promising repair technologies for aircraft, unmanned aerial systems, and other mission-critical metal components. Unlike welding or other high-heat repair methods, cold spray uses a high-velocity stream of metal powder to rebuild damaged surfaces without melting the underlying material. That means less heat damage, less distortion, and the potential to restore parts that might otherwise be scrapped or sent back to a depot for repair.
At Avadain, we believe cold spray is also an ideal application for large, thin, defect-free graphene, or LTDF graphene.
The basic idea is straightforward: if cold spray already allows metal powders to repair damaged aluminum structures, then improving those powders would improve the final repair. LTDF graphene is designed to do exactly that. Because our graphene has a large lateral flake size, few-layer thinness, and low defect density, it can act as a high-performance additive inside or around metal particles. In aluminum cold spray, that may help improve bonding, durability, corrosion resistance, and long-term performance.
This is especially important for high-strength aluminum alloys such as AA7075, which are widely used in aerospace because of their excellent strength-to-weight ratio. These alloys are valuable, but they are also difficult to repair using conventional methods. Cold spray offers a path to restore damaged aluminum components without the heat-related problems that come with welding. Adding LTDF graphene creates the opportunity to take that repair method a step further.
Avadain is currently working with partners to explore LTDF graphene-enhanced AA7075 cold spray for aerospace and defense-relevant repair applications. The goal is to determine how graphene loading, powder preparation, and spray parameters can be optimized to improve repair quality. This work is focused on practical outcomes: stronger repairs, better adhesion, improved corrosion resistance, and greater durability under real operating conditions.
For forward-deployed aircraft and UAS, the value proposition is easy to understand. If a damaged component can be repaired closer to the point of use, operators can reduce downtime, lower logistics burden, and extend the life of critical platforms. Instead of waiting for a part to be replaced or shipped back to a major repair facility, cold spray may enable faster restoration of capability in the field.
LTDF graphene is not meant to replace cold spray expertise. It is meant to enhance it. Cold spray performance depends on many factors, including powder size, particle velocity, substrate condition, temperature, pressure, and nozzle design. Graphene must be integrated carefully so that it improves the feedstock instead of interfering with particle bonding. That is why Avadain’s work is focused not just on adding graphene, but on developing the right graphene-metal architecture for the application.
This distinction matters. Much of the graphene market has been limited by inconsistent materials, poor dispersion, and lower-quality graphene products that do not deliver the properties promised by the word “graphene.” Avadain’s LTDF graphene is different because it is engineered around the physical features that matter most: large flakes, thin structure, and low defects. In applications like cold spray, those features may translate into better pathways for load transfer, barrier protection, and conductivity at very low loadings.
Cold spray is already changing how industry thinks about repair and sustainment. We believe LTDF graphene can help push Cold spray technology further.
For Avadain, this is exactly the kind of application we are built for: a large, real-world market where a small amount of high-quality graphene can create meaningful performance gains. As we continue this work, our focus is on turning graphene’s potential into measurable results for aerospace repair, defense readiness, and advanced manufacturing.
